Locking mechanism for motor vehicle doors



Sept. 4, 1956 Filed Oct. 16, 1952 United States Patent LOCKING MECHANISMFOR MOTOR VEHICLE DOORS Karl Wilfert, Stuttgart-Degerloch, and BlaBarnyi, Stuttgart-Ruhr, Germany, assignors to Daimler-BenzAktiengesellschaft, Stuttgart-Unterturkheim, Germany Application October16, 1952, Serial No. 314,981

Claims. (Cl. 292-34112) The present invention relates to a lockingmechanism for motor vehicle doors wherein the catch, which is operatedby the door handle, grippingly engages behind a striker which isfastened to the door post. Frequently, rattling occurs with doorsprovided with such locking mechanism, especially when the sealingstrips, which serve as a strip for the door in closed position, losetheir elasticity. Such rattling is ordinarily caused by the movement andthe noise connected therewith at the striker or at the catch.

It is, accordingly, an object of the present invention to provide alocking mechanism which prevents rattling during driving in a simplemanner and by means of relatively few and simple parts, which do notrequire much fitting.

It is a further object of the present invention to provide a catch andstriker which fit accurately with the door in closed position.

In accordance therewith, it is an essential characteristic of thepresent invention to provide one or several rubber butters directly atthe base plate, for example, at the plate fastened to the door, whilethe stop. and guidance parts therefor are arranged at the other baseplate, for example, the striker plate.

Further objects, advantages and features of the present invention willbecome more obvious from the following description when taken inconnection with the accompanying drawing which shows for purposes ofillustration only one preferred embodiment in accordance with thepresent invention, and wherein:

Figure 1 shows the door post with the base-plate for the strikerembedded therein.

Figure 2 shows the door with door lock and door handle and Figure 3shows an enlarged cross sectional view through the base plate with thestriker and stop part for the rubber buffer along line 33 of Figure 1.

Referring now more particularly to the drawing wherein like referencenumerals are used throughout the various views to designate like parts,the base plate b for the striker c is screwed to the door post a. Thecatch e of the door lies behind the inner groove of striker c with thedoor closed. A cylindrical rubber buffer g is fastened underneath thecatch e to the plate f. Rubber buffer g 2,761,72 Patented Sept. 4,

is arranged so as to slide into a stop part h which is firmly arrangedat the base plate b. Rubber bufier g lies with the door closed underpressure against the end i of stop part h, so that the catch e isthereby pressed against the back side of the striker c by means of anelastic biasing force, and a rattling of the door is thereby preventedduring driving.

By mounting the striker c and the stop part h on the joint base plate b,and by mounting the rubber bufler g on the plate 1, an accurate fit bythe various parts is absolutely guaranteed.

In the embodiment illustrated in Figure 3, the stop part h is formed ofone piece with the base plate b, and the striker c is embedded in thebase plate by means of rubber inserts k. The noiselessness of the lockmechanism of the door is thereby further improved.

The rubber buifer g, instead of being cylindrical, may also be shaped inany other suitable manner.

What we claim is:

l. A motor vehicle door locking mechanism comprising a base plate with astriker and with a stop part and another plate with a catch and with abuffer made of rubber, said stop part being disposed on said base plateperpendicularly to the direction of movement of said rubber buffer, andsaid rubber bulfer resting against said stop part under pressure withthe door in closed position whereby said catch is pressed against saidstriker by the pressure between said stop part and said bufier when thedoor is in closed position.

2. A door locking mechanism according to claim 1, wherein said stop partis of substantially U-shaped cross section, which is open in thedirection of movement of said another plate in such a manner that duringclosing of the door the rubber bufier enters said U-shaped cross sectionfrom the open side thereof.

3. A door locking mechanism according to claim 1 wherein said stop partis made in one piece with said base plate.

4. A door locking mechanism according to claim 1, further comprising arubber insert between said striker and said base plate.

5. A door locking mechanism according to claim 1 wherein said catch andsaid rubber buffer are arranged at said another plate, said anotherplate being fastened to the door, and wherein said striker and said stoppart are fastened to said base plate.

References Cited in the file of this patent UNITED STATES PATENTS396,429 Pratt Jan. 22, 1889 489,220 Currier et al. Jan. 3, 1893 975,675Bumiller Nov. 15, 1910 2,435,987 Tierney et al. Feb. 17, 1948 2,689,758Orr Sept. 21, 1954 FOREIGN PATENTS 372,919 Great Britain May 19, 1932388,106 Great Britain Feb. 23, 1933

